EVAL-ADUC831QSZ Datasheet, PDF (21/76 Pages) Analog Devices – MicroConverter®, 12-Bit ADCs and DACs with Embedded 62 kBytes Flash MCU

ADCCON3 – (ADC Control SFR #3)
The ADCCON3 register controls the operation of various calibra-
tion modes as well as giving an indication of ADC busy status.
SFR Address:
F5H
SFR Power-On Default Value: 00H
Bit Addressable:
NO
ADuC831
Table V. ADCCON3 SFR Bit Designations
Bit
Name
ADCCON3.7 BUSY
ADCCON3.6 GNCLD
ADCCON3.5 AVGS1
ADCCON3.4 AVGS0
ADCCON3.3 RSVD
ADCCON3.2 RSVD
ADCCON3.1 TYPICAL
ADCCON3.0 SCAL
Description
The ADC Busy Status Bit (BUSY) is a read-only status bit that is set during a valid ADC conversion or
calibration cycle. Busy is automatically cleared by the core at the end of conversion or calibration.
Gain Calibration Disable Bit
Set to “0” to Enable Gain Calibration.
Set to “1” to Disable Gain Calibration.
Number of Averages Selection Bits
This bit selects the number of ADC readings averaged during a calibration cycle.
AVGS1 AVGS0
Number of Averages
0
0
15
0
1
1
1
0
31
1
1
63
Reserved. This bit should always be written as “0.”
This bit should always be written as “1” by the user when performing calibration.
Calibration Type Select Bit.
This bit selects between Offset (zero-scale) and gain (full-scale) calibration.
Set to 0 for Offset Calibration.
Set to 1 for Gain Calibration.
Start Calibration Cycle Bit.
When set, this bit starts the selected calibration cycle. It is automatically cleared when the calibration
cycle is completed.
REV. 0
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